115
122
_time_node = node->getChild("indicated-time-min", 0, true);
116
123
_name_node = node->getChild("name", 0, true);
117
124
_bearing_node = node->getChild("indicated-bearing-true-deg", 0, true);
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_carrier_lat_node = fgGetNode("/ai/models/carrier/position/latitude-deg", true);
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_carrier_lon_node = fgGetNode("/ai/models/carrier/position/longitude-deg", true);
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_carrier_name_node = fgGetNode("/ai/models/carrier/name", true);
125
SGPropertyNode *cnode = fgGetNode("/ai/models/carrier", num, true );
126
_carrier_name_node = cnode->getChild("name", 0, true);
125
131
TACAN::update (double delta_time_sec)
128
134
double bearing = 0;
130
double carrier_az2= 0;
131
double carrier_bearing = 0;
136
double carrier_az2= 0;
137
double carrier_bearing = 0;
132
138
double carrier_distance = 0;
133
139
double frequency_mhz = 0;
134
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string _channel, _last_channel, _channel_1, _channel_2,_channel_3, _channel_4;
136
// If it's off, don't waste any time.
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if (!_serviceable_node->getBoolValue() ||
138
!_electrical_node->getBoolValue()
140
_last_distance_nm = 0;
141
_in_range_node->setBoolValue(false);
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_distance_node->setDoubleValue(0);
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_speed_node->setDoubleValue(0);
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_time_node->setDoubleValue(0);
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SG_LOG( SG_INSTR, SG_DEBUG, "skip tacan " );
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//SG_LOG( SG_INSTR, SG_DEBUG, "run tacan " );
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// If it's off, don't waste any time.
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if (!_serviceable_node->getBoolValue() || !_electrical_node->getBoolValue()) {
144
_last_distance_nm = 0;
145
_in_range_node->setBoolValue(false);
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_distance_node->setDoubleValue(0);
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_speed_node->setDoubleValue(0);
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_time_node->setDoubleValue(0);
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SG_LOG( SG_INSTR, SG_DEBUG, "skip tacan" );
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// Figure out the source
152
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const char * source = _source_node->getStringValue();
154
156
if (source[0] == '\0') {
156
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branch = "/instrumentation/" + name + "/frequencies/selected-channel";
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// branch = "/instrumentation/" + _name + "/frequencies/selected-mhz";
158
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_source_node->setStringValue(branch.c_str());
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source = _source_node->getStringValue();
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SG_LOG( SG_INSTR, SG_DEBUG, "source " << source );
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SG_LOG( SG_INSTR, SG_DEBUG, "source " << source );
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_channel_1 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[1]");
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_channel_2 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[2]");
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_channel_3 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[3]");
175
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frequency_mhz = searchChannel(_channel);
176
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SG_LOG( SG_INSTR, SG_DEBUG, "frequency " << frequency_mhz );
177
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_frequency_node->setDoubleValue(frequency_mhz);
180
181
// Get the aircraft position
181
double longitude_deg = _longitude_node->getDoubleValue();
182
double latitude_deg = _latitude_node->getDoubleValue();
183
double altitude_m = _altitude_node->getDoubleValue() * SG_FEET_TO_METER;
184
double longitude_rad = longitude_deg * SGD_DEGREES_TO_RADIANS;
185
double latitude_rad = latitude_deg * SGD_DEGREES_TO_RADIANS;
182
double longitude_deg = _longitude_node->getDoubleValue();
183
double latitude_deg = _latitude_node->getDoubleValue();
184
double altitude_m = _altitude_node->getDoubleValue() * SG_FEET_TO_METER;
185
double longitude_rad = longitude_deg * SGD_DEGREES_TO_RADIANS;
186
double latitude_rad = latitude_deg * SGD_DEGREES_TO_RADIANS;
187
188
// On timeout, scan again
188
189
_time_before_search_sec -= delta_time_sec;
189
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if (_time_before_search_sec < 0 && frequency_mhz > 0)
190
search(frequency_mhz, longitude_rad,
191
latitude_rad, altitude_m);
191
search(frequency_mhz, longitude_rad, latitude_rad, altitude_m);
193
193
// Calculate the distance to the transmitter
195
//calculate the bearing and range of the carrier from the aircraft
196
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_lat " << _carrier_lat);
197
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_lon " << _carrier_lon);
198
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_name " << _carrier_name);
199
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_valid " << _carrier_valid);
200
geo_inverse_wgs_84(altitude_m,
205
&carrier_bearing, &carrier_az2, &carrier_distance);
208
//calculate the bearing and range of the station from the aircraft
209
geo_inverse_wgs_84(altitude_m,
214
&bearing, &az2, &distance);
218
if ( carrier_distance <= distance && _carrier_valid) {
219
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_distance_nm " << carrier_distance);
220
SG_LOG( SG_INSTR, SG_DEBUG, "distance_nm " << distance);
221
bearing = carrier_bearing;
222
distance = carrier_distance;
223
_transmitter_elevation_ft = _carrier_elevation_ft;
224
_transmitter_range_nm = _carrier_range_nm;
225
_transmitter_bias = _carrier_bias;
226
_transmitter_name = _carrier_name;
227
_name_node->setStringValue(_transmitter_name.c_str());
230
double distance_nm = distance * SG_METER_TO_NM;
231
SG_LOG( SG_INSTR, SG_DEBUG, "distance_nm " << distance_nm << " bearing " << bearing);
195
//calculate the bearing and range of the carrier from the aircraft
196
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_lat " << _carrier_lat);
197
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_lon " << _carrier_lon);
198
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_name " << _carrier_name);
199
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_valid " << _carrier_valid);
200
geo_inverse_wgs_84(altitude_m,
205
&carrier_bearing, &carrier_az2, &carrier_distance);
208
//calculate the bearing and range of the station from the aircraft
209
geo_inverse_wgs_84(altitude_m,
214
&bearing, &az2, &distance);
218
if ( carrier_distance <= distance && _carrier_valid) {
219
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_distance_nm " << carrier_distance);
220
SG_LOG( SG_INSTR, SG_DEBUG, "distance_nm " << distance);
221
bearing = carrier_bearing;
222
distance = carrier_distance;
223
_transmitter_elevation_ft = _carrier_elevation_ft;
224
_transmitter_range_nm = _carrier_range_nm;
225
_transmitter_bias = _carrier_bias;
226
_transmitter_name = _carrier_name;
227
_name_node->setStringValue(_transmitter_name.c_str());
230
double distance_nm = distance * SG_METER_TO_NM;
231
SG_LOG( SG_INSTR, SG_DEBUG, "distance_nm " << distance_nm << " bearing " << bearing);
233
233
/*Point3D location =
234
234
sgGeodToCart(Point3D(longitude_rad, latitude_rad, altitude_m));
294
293
if ( _carrier_valid ) {
295
294
SG_LOG( SG_INSTR, SG_DEBUG, "carrier transmitter valid " << _carrier_valid );
297
296
string str1( carrier_tacan->get_name() );
298
string str2 ( _carrier_name_node->getStringValue());
299
SG_LOG( SG_INSTR, SG_DEBUG, "strings 1 " << str1 << " 2 " << str2 );
300
unsigned int loc1= str1.find( str2, 0 );
301
if( loc1 != string::npos && str2 != "" ){
302
SG_LOG( SG_INSTR, SG_DEBUG, " string found" );
303
_carrier_lat = _carrier_lat_node->getDoubleValue();
304
_carrier_lon = _carrier_lon_node->getDoubleValue();
305
_carrier_elevation_ft = carrier_tacan->get_elev_ft();
306
_carrier_range_nm = carrier_tacan->get_range();
307
_carrier_bias = carrier_tacan->get_multiuse();
308
_carrier_name = carrier_tacan->get_name();
312
SG_LOG( SG_INSTR, SG_DEBUG, " carrier transmitter invalid " << _carrier_valid );
316
//_name_node->setStringValue(_transmitter_name.c_str());
298
SGPropertyNode * branch = fgGetNode("ai/models", true);
299
vector<SGPropertyNode_ptr> carrier = branch->getChildren("carrier");
301
int number = carrier.size();
303
SG_LOG( SG_INSTR, SG_DEBUG, "carrier " << number );
306
for ( i = 0; i < number; ++i ) {
307
string str2 ( carrier[i]->getStringValue("name", ""));
308
// SG_LOG( SG_INSTR, SG_DEBUG, "carrier name " << str2 );
310
SG_LOG( SG_INSTR, SG_DEBUG, "strings 1 " << str1 << " 2 " << str2 );
311
unsigned int loc1= str1.find( str2, 0 );
312
if ( loc1 != string::npos && str2 != "" ) {
313
SG_LOG( SG_INSTR, SG_DEBUG, " string found" );
314
_carrier_lat = carrier[i]->getDoubleValue("position/latitude-deg");
315
_carrier_lon = carrier[i]->getDoubleValue("position/longitude-deg");
316
_carrier_elevation_ft = carrier_tacan->get_elev_ft();
317
_carrier_range_nm = carrier_tacan->get_range();
318
_carrier_bias = carrier_tacan->get_multiuse();
319
_carrier_name = carrier_tacan->get_name();
321
SG_LOG( SG_INSTR, SG_DEBUG, " carrier transmitter valid " << _carrier_valid );
325
SG_LOG( SG_INSTR, SG_DEBUG, " carrier transmitter invalid " << _carrier_valid );
329
SG_LOG( SG_INSTR, SG_DEBUG, "name " << _carrier_name);
318
330
SG_LOG( SG_INSTR, SG_DEBUG, "lat " << _carrier_lat << "lon " << _carrier_lon);
319
331
SG_LOG( SG_INSTR, SG_DEBUG, "elev " << _carrier_elevation_ft);
320
SG_LOG( SG_INSTR, SG_DEBUG, "name " << _carrier_name);
323
SG_LOG( SG_INSTR, SG_DEBUG, " carrier transmitter invalid " << _carrier_valid );
334
SG_LOG( SG_INSTR, SG_DEBUG, " carrier transmitter invalid " << _carrier_valid );
327
338
// try the TACAN/VORTAC list next
328
339
FGNavRecord *tacan
329
340
= globals->get_tacanlist()->findByFreq( frequency_mhz, longitude_rad,
330
latitude_rad, altitude_m);
341
latitude_rad, altitude_m);
332
343
_transmitter_valid = (tacan != NULL);
334
345
if ( _transmitter_valid ) {
335
346
SG_LOG( SG_INSTR, SG_DEBUG, "transmitter valid " << _transmitter_valid );
337
348
_transmitter_lat = tacan->get_lat();
338
349
_transmitter_lon = tacan->get_lon();
339
350
_transmitter_elevation_ft = tacan->get_elev_ft();
341
352
_transmitter_bias = tacan->get_multiuse();
342
353
_transmitter_name = tacan->get_name();
343
354
_name_node->setStringValue(_transmitter_name.c_str());
356
SG_LOG( SG_INSTR, SG_DEBUG, "name " << _transmitter_name);
345
357
SG_LOG( SG_INSTR, SG_DEBUG, "lat " << _transmitter_lat << "lon " << _transmitter_lon);
346
358
SG_LOG( SG_INSTR, SG_DEBUG, "elev " << _transmitter_elevation_ft);
347
SG_LOG( SG_INSTR, SG_DEBUG, "name " << _transmitter_name);
350
SG_LOG( SG_INSTR, SG_DEBUG, "transmitter invalid " << _transmitter_valid );
361
SG_LOG( SG_INSTR, SG_DEBUG, "transmitter invalid " << _transmitter_valid );
356
366
TACAN::searchChannel (const string& _channel){
358
368
double frequency_khz = 0;
360
370
FGTACANRecord *freq
361
371
= globals->get_channellist()->findByChannel( _channel );
362
double _freq_valid = (freq != NULL);
372
double _freq_valid = (freq != NULL);
363
373
SG_LOG( SG_INSTR, SG_DEBUG, "freq valid " << _freq_valid );
364
374
if ( _freq_valid ) {
365
375
frequency_khz = freq->get_freq();
366
376
SG_LOG( SG_INSTR, SG_DEBUG, "freq output " << frequency_khz );
368
if (frequency_khz >9620 && frequency_khz <= 12130)return frequency_khz/100;
378
if (frequency_khz >=9620 && frequency_khz <= 12130)
379
return frequency_khz/100;
370
381
return frequency_khz = 0;
371
382
} // end TACAN::searchChannel
373
384
// end of TACAN.cxx